Detections
Analytics

Splunk Enterprise 9.2.0 < 9.2.10, 9.3.0 < 9.3.8, 9.4.0 < 9.4.6, 10.0 < 10.0.1 (SVD-2025-1203)

medium Nessus Plugin ID 277115

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Synopsis

An application running on a remote web server host is affected by a vulnerability

Description

The version of Splunk installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the SVD-2025-1203 advisory.

 - In Splunk Enterprise versions below 10.0.1, 9.4.6, 9.3.8, and 9.2.10, and Splunk Cloud Platform versions below 10.1.2507.4, 10.0.2503.6, and 9.3.2411.117.125, an unauthenticated attacker can inject American National Standards Institute (ANSI) escape codes into Splunk log files due to improper validation at the /en-US/static/ web endpoint. This may allow them to poison, forge, or obfuscate sensitive log data through specially crafted HTTP requests, potentially impacting log integrity and detection capabilities.
 (CVE-2025-20384)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade Splunk Enterprise to versions 10.0.1, 9.4.6, 9.3.8, 9.2.10, or higher.Splunk is actively monitoring and patching Splunk Cloud Platform instances.

See Also

https://advisory.splunk.com/advisories/SVD-2025-1203.html

Plugin Details

Severity: Medium

ID: 277115

File Name: splunk_1001_cve-2025-20384.nasl

Version: 1.2

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 12/3/2025

Updated: 12/12/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2025-20384

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:splunk:splunk

Required KB Items: installed_sw/Splunk, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 12/3/2025

Vulnerability Publication Date: 12/3/2025

Reference Information

CVE: CVE-2025-20384

CWE: 117

IAVA: 2025-A-0899